Naruto: I'm really not an evil scientist!

In this way, even in other worlds, he can do many special things without controlling the Underworld.

I also tried to use cause and effect to intervene in the realm of destiny, to devise an interesting script for others, so that my future research and mastery of topics like "destiny" wouldn't be like a headless fly.

"Komaji can be considered a talent, though he hasn't reached the supreme level of 'Transparent World' even after hundreds of years." Hiru sighed, deeply regretting that he hadn't been able to acquire Yoriichi Tsugikuni, the most valuable person in this world.

However, Komaji's Blood Demon Art is also quite useful to him. Combined with the Transparent World and the Sage Chakra he developed, it completely fills the gaps in his development of chakra martial arts regarding the issues of energy sensing and shutting down control. It has already been analyzed and incorporated into the Sage Chakra Manual.

The Naruto world also has such mystical things as killing intent, but most of the advanced sensory abilities used by high-ranking ninjas are based on sensing the opponent's chakra.

Chapter 412

Everything revolves around chakra, so many advanced sensory abilities are not applicable in other worlds.

Komaji's Blood Demon Art Destruction Killing: Compass can automatically sense the opponent's fighting spirit after the technique is activated, and make the body make corresponding attacks and evasions more accurate. Moreover, the stronger the opponent's fighting spirit, the stronger the Compass's reaction, and the higher the corresponding strength and accuracy.

However, the drawback is also obvious: if it is a weakling, non-martial arts masters cannot sense it, and even top masters who have entered the highest realm of the Transparent World and can freely close their aura cannot sense it.

This deficiency was nothing to the non-human Hiruko. In his study of chakra, natural energy, and sage energy, he had already grasped the mystery that all things have "aura" and "fluctuation," or rather, the philosophy of martial arts.

Therefore, after being improved by the scientific ninja Hiruko, through sensing the fluctuations and energy fields of all things, it is now possible to reproduce the martial arts fantasy operations such as sensing, attracting, and clashing "energy" in Huang Yi's martial arts world, and even spiritual duels.

Afterwards, one can seamlessly connect to the highest realm of the Transparent World. The Transparent World is the highest realm of martial arts because those who reach this realm can not only freely open and close their own aura, but are also connected to the "selflessness" realm in the martial arts path.

This is a supreme level of swordsmanship that is widely accepted and revered by various schools of swordsmanship in ancient Japan. It has different names in different schools, such as Muga, Mushin, and Musou, but they all lead to the same goal.

The idea behind this level is actually quite simple. To put it bluntly, it means that the body will act before the mind, but the actions must be refined through countless trials and be the best response to counter the opponent's moves.

In other words, the state of selflessness is to completely transform the most rational use of all techniques into one's own instinctive reaction.

During combat, there's no need to spend time thinking about how to deal with the opponent's moves. Before you even think about it, your body will automatically select the best response from the moves you've honed over time, and even create your own moves on the spot.

Because there is no thought process, the strike is the fastest and strongest.

Without hesitation, there will be no defeat.

In the Book of Five Rings, Miyamoto Musashi emphasized that military strategy, which refers to both swordsmanship and military science, should reach a state of emptiness, that is, selflessness.

This leads to the practice of Zen meditation. Miyamoto Musashi believed that Buddhist thought was very much in line with his own philosophy of non-self, so he suggested that those who study military strategy should also practice Zen meditation. This is why many Japanese Kendo practitioners like to practice Zen meditation.

The concept of "selflessness" in swordsmanship naturally appears in many works, especially in Japanese manga, where many manga artists like to use this setting, so this concept is widely used.

For example, Ultra Instinct in Dragon Ball Super is a derivative of the "selflessness" state in the Dragon Ball worldview. Even in the world of Prince of Tennis, which features murderous tennis, there is a setting for awakening the "selflessness" state.

There is also "selflessness" in Bleach, but it is not as flashy as Dragon Ball Super and Murder Tennis. It is wilder, and when it turns on its power-up, it just says "Instinct~", and then Ichigo disconnects, reconnects, and has someone else take over and crushes the opponent.

Kurosaki Isshin's daily ambushes of Ichigo, done in a playful manner, were also training Ichigo's combat instincts and reaction abilities. As a result, Ichigo had already embarked on the path of "selflessness." Only after his spiritual pressure caught up could he enter the Seireitei and unleash his full power to take off so quickly.

However, he himself has not fully mastered "selflessness", so at critical moments he still needs Hollow White to switch accounts to save the day, using the same fighting conditions as Ichigo to unleash fighting power far exceeding Ichigo's and crush the opponent.

……

"Can everyone from the Butterfly Mansion go to the underworld alive together?" Shinobu asked in surprise.

Although the Taisho era was a "prosperous" period of rapid development and transition in Japan, there were too many pitiful people and marginalized figures in the tide of the times. Their lives were actually very hard. As the saying goes, "When the country prospers, the people suffer; when the country falls, the people suffer." Otherwise, there wouldn't have been so many demons and demon hunters.

After the Demon Slayer Corps disbands in the future, the girls of the Butterfly Mansion will find it difficult to live happily in this chaotic world on their own unless they continue to rely on the Ubuyashiki family.

Therefore, if one could join a peaceful "Shangri-La," even a place like the underworld would be nice, since people in the mortal realm don't necessarily do mortal things.

"That's right, and Lord Hiruko said that if you get tired of living in the underworld for too long in the future, you can be reincarnated first."

Kanae Kocho smiled and said, "When reincarnated, one can choose to be reborn into a good family based on the contributions accumulated at work, thus filtering out some bad 'options.' Lord Hiruko calls this the employee welfare of the underworld."

Being born into a good family doesn't necessarily mean royalty or the wealthy. Rather, it means being born into a family where both parents are alive and well, and where family members have good personalities and daily habits, and there are no bad habits or abnormal addictions such as discrimination, alcoholism, gambling, or superstition.

Of course, these families are not poor in terms of material conditions, after all, "when the granaries are full, people know etiquette; when they are well-fed and clothed, they know honor and shame."

"This is too good to be true, could it be that you, sister..." Shinobu Kocho looked at her sister with a strange expression.

She thought of her friend Kanroji Mitsuri's lewd bust size. As far as she knew, that god, or rather, the king of the underworld, Hiruko, this scientific ninja, seemed to be quite a womanizer, not someone who was indifferent to women.

Moreover, last time my sister obediently lay in Lord Hiruko's arms. Although I later learned that my sister was deliberately teasing me, my sister definitely had feelings for Lord Hiruko.

By normal standards of beauty, my sister is definitely a beauty. In addition, she is quite accomplished in guzheng, flower arrangement, and tea ceremony. She is a true lady of high society, and her soul is very pure. It is not impossible for her to win the favor of Lord Hades.

So, is it because my sister became Hades' woman after she died that she treats them so well?

Shinobu Kocho wasn't opposed to it, after all, there was no one in the world with a higher status than Hiruko, and the Taisho era was an era where feudalism and reform coexisted, and polygamy was not uncommon.

"What do you want to say, Shinobu?" Kanae Kocho asked, somewhat puzzled.

"Sister, are you now Lord Hades's concubine?" Shinobu Kocho asked tentatively.

"Huh? Eh?! Hmm... Hmm!"

"All souls belong to Lord Hiruko, and I... I am no exception!"

Kanae Neko neither denied nor confirmed Shinobu's statement. She had long been Hiruko's possession. After being reborn in the fruit created by Hiruko using scientific methods, both her soul and body had been infiltrated by Hiruko's power.

Hiruko, the scientific ninja, is to some extent her "father" and the closest person to her, transcending the physical blood ties. She is Hiruko's familiar, and their karma is intertwined.

And everyone in the Butterfly Mansion will eventually become Hiruko's servants; it's only a matter of time. Otherwise, how could ordinary souls borrow Hiruko's authority to manage the underworld?

In the deep mountains, where dark clouds gather and few people venture.

Upper Moon One, Kokushibo—or rather, the new Demon King, Tsugikuni Iwakatsu—was wielding his long sword, continuing to hone his martial arts skills.

After Muzan's death, the demon blood within him seemed to have broken through some kind of limitation, making him much stronger once again.

For over four hundred years, he has honed his martial arts skills every day without ever slacking off.

There is no existence that must be defeated, nor any dream that must be realized.

Yoriichi Tsugikuni, the younger brother who was favored by the gods, had long since died.

He didn't aspire to surpass that man; he simply instinctively craved to narrow the gap between them, and rigorous daily training had become a habit.

Caw~ caw~ caw~ Several crows circled in the air.

"The Demon Slayer Corps?" Kokushikatsu Tsugikuni stopped swinging his sword and frowned slightly.

He was once a swordsman in the Demon Slayer Corps, and in the four hundred years since he became a demon, he has killed many swordsmen. He is no stranger to the crows that the Ubuyashiki family has raised that can speak human language.

He raised his hand, looking at the crows as if he wanted to chop them down, but then lowered it again: "Never mind, just treat it as a pastime."

In addition to sword practice and meditation, sword fighting is an essential part of kendo training.

Moreover, there was something he was very curious about: perhaps he could get information from the attacking Demon Slayer Corps members.

He stood there, waiting for the Demon Slayer Corps swordsmen to arrive.

A moment later, a young man with a scarred face, bloodshot eyes, and a fierce appearance, surrounded by swirling vortexes, rushed over.

The young man also saw Jiguo Yansheng and became very excited. He immediately drew his sword and lunged at him.

"Wind Breathing - First Form - Dust Whirlwind - Slash!" Shinazugawa Sanemi charged forward, brandishing his blade. His thrust, as sharp as an electric drill, left behind a solidified blue rotating wind blade that could easily shatter the ground. The ground shattered into pieces, and his attack was accompanied by a powerful shockwave.

However, with a sidestep and a backward jump, Jikuni Iwakatsu easily dodged Shinazugawa Sanemi's sudden, aggressive attack.

"A swordsman who practices the Breath of Wind?" Kokushibo frowned, seemingly puzzled. "But what are those channels and meridians flowing through his body?"

Unlike Muzan Kibutsuji, who was a complete waste, Kokushibo Tsugikuni had already reached the highest level of the Transparent World. He had extremely strong perception abilities and could easily see through the muscles, blood vessels, and even the chakra flowing in Shinazugawa Sanemi's body, just like the Byakugan of the Hyuga clan.

Furthermore, he had also activated his Demon Slayer Mark over four hundred years ago under the resonance of Yoriichi's Mark, and he had mastered it to the pinnacle that an ordinary swordsman could achieve. However, after becoming a demon, the Demon Slayer Mark was no different from a decorative tattoo to him, and could not provide much of a boost.

"Tch, you dodged it, huh?" Shinazugawa Sanemi twisted his neck in annoyance, readjusted his stance, gripped his sword tightly, and aimed at the neck of the demon opposite him. Wind blades created by his Breath of the Wind and thin strands of wind-attribute chakra wrapped around the edge of the blade.

Thump! Thump! Thump! His heart pounded, his body temperature rose, and green, windmill-like patterns appeared on his face. Then, he pushed off with all his might and charged towards Tsugikuni Iwakatsu again: "I'll take you down before the other Pillars get here!"

"Has the mark been activated?" Tsugikuni Iwakatsu sighed, seemingly with regret.

Swordsmen who awaken their Demon Slayer Marks, except for Yoriichi Tsugikuni who was born with them, all die before the age of 25. The swordsman in front of me looks to be close to 20, so it seems he won't live for many more years.

Moreover, the markings can be "infected" to other excellent swordsmen in a resonant way, so the swordsmen of this generation are likely to have short lifespans.

"Wind Breathing, Fourth Form: Rising Sandstorm!" Shinazugawa Sanemi unleashed five emerald-green wind blades from below, and following closely behind his own wind blades, it seemed as if he was brewing an even stronger killing move.

"Breath of the Moon, Second Form: Pearl Moon Dance." Kokushiro Tsugikuni turned his body and simultaneously unleashed two blade winds. The blade winds were covered with many crescent-shaped blades that resembled tiny sword energies, easily deflecting the oncoming wind blades and neutralizing Sanemi Shinazugawa's attack.

However, he keenly sensed something was amiss. The knife felt strange to the touch. Upon closer inspection, he discovered that cracks and even numerous tiny nicks had appeared on his blade.

His sword is a demonic blade forged from his own flesh and blood.

The blade, handle, and grip are all covered with eyes, and with each swing, countless crescent blades are generated. The size and length of the crescent blades change from time to time, and there is no fixed shape.

Although it is made of flesh and blood, its hardness and sharpness are no less than those of an ordinary Nichirin Blade. Moreover, if the blade is damaged, it can instantly "grow back" to its original form. Furthermore, as he unleashes his power, it can evolve into an even longer, alien blade with split blades.

"Such cutting ability..." A sense of curiosity was aroused in Kokushiro Tsugikuni. He thought of the scientific ninja Hiruko who had studied the combination of chakra and weapons. Perhaps the swordsman's blade contained a mysterious power similar to chakra.

"Wind Breathing - Eighth Form - First Fierce Wind Slash!" Shinazugawa Sanemi charged forward and slashed around the enemy with the speed of a gust of wind, trying to tear his body apart. At the same time, powerful spiraling wind blades swirled around him, like a small typhoon.

The demon before him made no attempt to dodge or swing its sword, allowing Sanemi Shinazugawa to shatter his body.

Sanemi Shinazugawa showed no mercy, severing the demon's neck with his powerful cutting ability, amplified by wind-style chakra, making him virtually invincible.

"As expected, this is not the power of breathing techniques," Tsugikuni Iwakatsu murmured. He remembered that Hiruko had once said that some special powers could simulate the effects of breathing techniques, or even surpass them.

"What?!" Before Shinazugawa Sanemi could even rejoice, he saw the pieces of flesh he had chopped up easily glued back together. "It was clearly his neck..."

Chapter 413

"Breath of the Moon, First Form, Dark Moon, Night Palace!" As soon as he finished speaking, Shinazugawa Sanemi's right arm was instantly severed by Tsugikuni Iwakatsu's powerful, lightning-fast sword-drawing slash.

Blood splattered, and beautiful crescent blade effects appeared along the trajectory of the attack behind Ji Guoyan Sheng.

"hateful!"

After his arm was broken, Sanemi Shinazugawa did not let out a painful howl, nor did he retreat. Instead, his body was surrounded by wind blades generated by his breathing technique and extremely sharp wind-attribute chakra. He spun like a top and rushed into Kokushibo's arms, as if he wanted to cut him to pieces again.

In his view, since the combination of wind-attribute chakra and wind blades can easily sever the body of a demon, it can also shatter it even without the Nichirin Blade.

Since cutting off the neck with the Nichirin Blade doesn't seem to work anyway, let's spin it! While slicing the opponent to pieces, let's create a hurricane strong enough to disperse the dark clouds and let the sun purify the evil spirits.

Fortunately, it was still barely daytime, but the weather in the mountains was gloomy, which was why this evil spirit could move around in broad daylight.

"It's useless. Without the ability to freely close your own fighting spirit, all your attack intentions are too obvious and easy to understand." Tsugikuni Iwakatsu said coldly. He remembered that Hiruko had studied how to sense and utilize an opponent's fighting spirit, and he himself had now mastered this technique.

With a single slash, he severed Shinazugawa Sanemi's other arm, then raised his knee and kicked him so hard that he collapsed to the ground, convulsing all over.

In the eyes of the swordsman who had reached the Transparent World, everything was so clear, everything was so slow, and coupled with his powerful physique after becoming the Demon King, if he hadn't deliberately held back before, Shinazugawa Sanemi wouldn't even have had the chance to touch him.

“Tell me, what is this energy flowing through your body?” Tsugikuni Iwakatsu asked curiously. “This power seems to be operating along a special trajectory. Is it mimicking the effects of breathing techniques, similar to the method of concentrating chakra to train the body that Hiruko researched?”

This power seemed to be able to transmit the owner's emotions; just now, during the process of being slashed, he clearly felt the swordsman's hatred for the demon.